Security audit

Markdown Fetch

Security checks for vulnerabilities and agentic risk

Overview

The skill mostly does what it claims, but it can automatically print full fetched URLs to logs, which may expose private links or tokens.

Review or patch the logging before installing or using this skill. It should avoid printing full URLs, especially signed links, reset links, API keys, session tokens, private paths, or internal hostnames; token-savings logs should omit or sanitize the URL unless explicitly enabled for debugging.

A.I.G

Vulnerability Patterns

Insecure Skill Coding PracticesFinds exploitable flaws such as hardcoded secrets or command injection
Skill Instruction HijackingAlters the agent's session goals or safety constraints when the skill loads
Agent Memory PoisoningWrites attacker-controlled rules into memory that affect later sessions
Remote Payload Retrieval and ExecutionFetches external code whose behavior can change after review
Embedded Malicious CodeShips malicious scripts inside the skill and executes them locally

Findings (1)

T09 · Insecure Skill Coding Practices

Warning

Location: index.js:59
Finding: Sensitive URL Data Exposed Through Logging
Content: View full analysis
Remediation: View remediation

SkillSpector

Vulnerability Patterns

MCP Least PrivilegeUnderdeclared Capability, Wildcard Permission, Missing Permission Declaration
Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code

Findings (3)

Undeclared Tool Scope

Medium

Category: MCP Least Privilege
Confidence: 70% confidence
Finding: Without declared permissions the skill's intent is opaque and cannot be validated.
Content: No source excerpt is available for this finding.

Natural-Language Policy Violations

Medium

Category: Not specified by scanner
Confidence: 92% confidence
Finding: The skill title and usage instructions are written in Chinese, and the file does not indicate that the language choice is optional or that the skill is intended only for a Chinese-speaking context. This can violate language/locale policy when users are not given an opt-in or alternative language.
Content: No source excerpt is available for this finding.

Natural-Language Policy Violations

Low

Category: Not specified by scanner
Confidence: 86% confidence
Finding: This JavaScript file contains natural-language comments and console output exclusively in Chinese, such as the file description and status messages. Under the stated policy, forcing a specific language without offering user choice or documenting a justified locale constraint is a natural-language policy violation.
Content: No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.